Embroidery-hoop.



B. D. POST. EMBROIDERY HOOP.

(Application filed Oct. 9, 1899.)

Patented Feb. 6, E900.

(No Model.')

272 asses: Mentor:

65MMKWQ %M 07 4M TATES BETTIE D. POST, OF HARTFORD, CONNECTICUT, ASSIGNOR TO HALSEY B. PI-IILBRICK, OF SAME PLACE.

EMBROIDERY-HOOP.

SPECIFICATION forming part of Letters Patent No. 643,069, dated February 6, 1900.

Serial No. 732,993. (No model.)

T0 to whom it may concern.-

Be it known that I, BETTIE D. POST, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut,have invented certain new and useful Improvements in Embroidery-Hoops, of which the following is a full, clear, and exact description.

My invention relates to the class of devices used for holding a piece of fabric, more especially for the purpose of embroidery to be worked thereon; and one object of my invention is to provide a device of this class that shall clamp the fabric tightly and equally on all sides, and especially one in which there shall be no projecting parts upon which the thread used for embroiderin g may catch; and a further object is to provide a device that shall be extremely light and at the same time extremely strong and durable and also one having a neat and finished appearance. A means of attaining these objects is illustrated in the accompanying drawings, in which- Figure 1 is a plan View of an embroideryhoop embodying my invention. Fig. 2 is a detail side view of a portion of the hoop, showing the means for expanding the inner hoop.

In the accompanying drawings the letter a denotes the outer hoop,preferably constructed of wood and continuous throughout its length. Within this hoop is located an expanding hoop I), also preferably constructed of wood. This expanding hoop b is split at one end, as at b, in order to allow for the necessary expansion and contraction. In the form shown this opening Z) between the two ends of the hoop is out diagonally across the hoop in order to allow for the necessary extent of movement under varying conditions to clamp the fabric between the two hoops, which conditions will vary from the difierence in thickness of the materials which may be used.

From the inner surface of the hoop 17 proj ections c extend, and in these projections are formed openings 0, that are screw-threaded for the reception of the screw-threaded end of an expander (Z. This expander consists of a central portion which is milled or otherwise roughened, and on each side of this central part and projecting in the same line are the screws d of smaller diameter. The threads of these screws are of varying pitch, and by the term varying I mean that the screws may extend in opposite directions-that is, be right or left hand screws or one may be coarser than the other. It is preferred, however, that the screws shall be the same as to pitch, but that one shall be right hand and the other left hand, the openings in the pro jections c of course being threaded to correspond with that part of the screw entering said projection.

I am aware that it is not broadly new to clamp the fabric between two hoops by contracting the space between the hoops, such result having been attained by compressing an outer hoop upon a rigid inner hoop, and my invention is designed to overcome certain disadvantages in such a construction. In such a construction the projections for the clamping means are located outside of the hoop, and the thread as it is passed through the fabric forms a loop that falls over the side of the hoop and is liable to catch on these projections, and 'thus cause inconvenience and trouble. By locating the projections on the inside of the hoop the loop that is formed on the under side of the hoop will hang downward, and therefore there is little liability of catching on the projections so located.

Another advantage of my improvement over those of prior devices is that in expanding the inner hoop against the outer hoop the fabric in such operation is tightened by reason of theincreased diameterof the innerhoop, whereas in a construction where the outer hoop is contracted the fabric is loosened by reason of the decreased diameter of the hoop, whereas it is desirable to keep the fabric as, tight as possible across the hoop.

It has been found by experiment that the two ends of the hoop to securethe best results must be moved away from'each other to the same extent, a construction in which a screw-thread on one end of the expander fitting a screw-threaded socket in one end of the hoop only expanding the hoop on that side in which the screw-threads are located and not expanding it on. the opposite side, so that the fabric is tightly clamped on one side of the hoop, but is left loose on the other side of the hoop. This fault is entirely overcome by constructing the threads on each end of the expander of equal pitch.

WhatI claim, and desire to secure by Letters Patent, is-

1. In an embroidery-hoop, in combination, an outer non-expansible member, an inner expansible member with ends overlapping depthwise of the hoop, threaded sockets located on opposite sides of the opening between the ends of the inner member and having respectively right and left hand threads, and an expanding-screw having a right-hand thread on one end and a left-hand thread on BETTIE D. POST.

WVitnesses:

JoHN H. PosT, ARTHUR B. JENKINS. 

